package com.atlige.gzmall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atlige.common.constant.ProductConstant;
import com.atlige.common.to.SkuReductionTo;
import com.atlige.common.to.SpuBoundTo;
import com.atlige.common.to.es.SkuEsModel;
import com.atlige.common.utils.R;
import com.atlige.gzmall.product.entity.*;
import com.atlige.gzmall.product.feign.CouponFeignService;
import com.atlige.gzmall.product.feign.SearchFeignService;
import com.atlige.gzmall.product.feign.WareFeignService;
import com.atlige.gzmall.product.service.*;
import com.atlige.gzmall.product.vo.*;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atlige.common.utils.PageUtils;
import com.atlige.common.utils.Query;

import com.atlige.gzmall.product.dao.SpuInfoDao;
import org.springframework.transaction.annotation.Transactional;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {
    @Autowired
    SpuInfoDescService spuInfoDescService;
    @Autowired
    SpuImagesService imagesService;
    @Autowired
    AttrService attrService;
    @Autowired
    ProductAttrValueService productAttrValueService;
    @Autowired
    SkuInfoService skuInfoService;
    @Autowired
    SkuImagesService skuImagesService;
    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;
    @Autowired
    CouponFeignService couponFeignService;
    @Autowired
    BrandService brandService;
    @Autowired
    CategoryService categoryService;
    @Autowired
    WareFeignService wareFeignService;
    @Autowired
    SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * // TODO 高级部分继续完善
     * @param spuSaveVo
     */
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo spuSaveVo) {
        // 1、保存spu基本信息 `pms_spu_info`
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(spuSaveVo, infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(infoEntity);
        // 2、保存spu的描述图片 `pms_spu_info_desc`
        List<String> decript = spuSaveVo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(infoEntity.getId());
        descEntity.setDecript(String.join(",", decript));
        spuInfoDescService.saveSpuInfoDesc(descEntity);
        // 3、保存spu的图片集 `pms_spu_images`
        List<String> images = spuSaveVo.getImages();
        imagesService.saveImages(infoEntity.getId(), images);
        // 4、保存spu的规格参数 `pms_product_attr_value`
        List<BaseAttrs> baseAttrs = spuSaveVo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(item -> {
            ProductAttrValueEntity attrValueEntity = new ProductAttrValueEntity();
            attrValueEntity.setAttrId(item.getAttrId());
            attrValueEntity.setAttrValue(item.getAttrValues());
            attrValueEntity.setQuickShow(item.getShowDesc());
            attrValueEntity.setSpuId(infoEntity.getId());
            AttrEntity id = attrService.getById(item.getAttrId());
            attrValueEntity.setAttrName(id.getAttrName());
            return attrValueEntity;
        }).collect(Collectors.toList());
        productAttrValueService.saveProductAttr(collect);
        // 5、保存spu的积分信息 `sms_spu_bounds`
        Bounds bounds = spuSaveVo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        BeanUtils.copyProperties(bounds, spuBoundTo);
        spuBoundTo.setSpuId(infoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundTo);
        if (r.getCode() != 0) {
            log.error("远程保存spu积分信息失败");
        }
        // 5、保存当前spu对应的所有sku信息
        List<Skus> skus = spuSaveVo.getSkus();
        if (skus != null && skus.size() > 0){
            skus.forEach(item -> {
                String defaultImage = "";
                for (Images image : item.getImages()) {
                    if (image.getDefaultImg() == 1){
                        defaultImage = image.getImgUrl();
                    }
                }
                /*
                    private String skuName;
                    private BigDecimal price;
                    private String skuTitle;
                    private String skuSubtitle;
                 */
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item, skuInfoEntity);
                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(infoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImage);
                // 5.1 sku的基本信息 `pms_sku_info`
                skuInfoService.saveSkuInfo(skuInfoEntity);

                Long skuId = skuInfoEntity.getSkuId();

                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(image -> {
                    SkuImagesEntity imagesEntity = new SkuImagesEntity();
                    imagesEntity.setSkuId(skuId);
                    imagesEntity.setImgUrl(image.getImgUrl());
                    imagesEntity.setDefaultImg(image.getDefaultImg());
                    return imagesEntity;
                }).filter(entity -> {
                    // 返回true就收集
                    return !StringUtils.isEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());
                // 5.2 sku的图片信息 `pms_sku_images`
                // TODO 没有图片路径的无需保存
                skuImagesService.saveBatch(imagesEntities);
                // 5.3 sku的销售属性信息 `pms_sku_sale_attr_value`
                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity valueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, valueEntity);
                    valueEntity.setSkuId(skuId);

                    return valueEntity;
                }).collect(Collectors.toList());
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                // 5.4 sku的优惠、满减信息 gzmall_sms -> `sms_sku_ladder`\`sms_sku_full_reduction`\`sms_member_price`
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item, skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if (skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1){
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if (r1.getCode() != 0) {
                        log.error("远程保存sku优惠信息失败");
                    }
                }
            });


        }

    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {
        this.baseMapper.insert(infoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();
        /**
         * status: 0
         * key:
         * brandId: 10
         * catelogId: 225
         */
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)){
            wrapper.and(obj -> {
                obj.eq("id", key).or().like("spu_name", key);
            });
        }
        String status = (String) params.get("status");
        if (!StringUtils.isEmpty(status)){
            wrapper.eq("publish_status", status);
        }
        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmpty(brandId) && !"0".equalsIgnoreCase(brandId)){
            wrapper.eq("brand_id", brandId);
        }
        String catelogId = (String) params.get("catelogId");
        if (!StringUtils.isEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)){
            wrapper.eq("catalog_id", catelogId);
        }

        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );
        return new PageUtils(page);
    }

    /**
     * 商品上架
     * @param spuId
     */
    @Override
    public void up(Long spuId) {
        // 1.1 查出但概念spuId对应的所有sku信息，品牌名字
        List<SkuInfoEntity> skuInfoEntities = skuInfoService.getSkusBySpuId(spuId);
        List<Long> skuIdList = skuInfoEntities.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());
        // TODO 4、查询当前sku的所有可以被用来检索的规格属性
        List<ProductAttrValueEntity> baseAttrs = productAttrValueService.baseAttrListForSpu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        List<Long> searchAttrId = attrService.selectSearchAttrIds(attrIds);
        Set<Long> idSet = new HashSet<>(searchAttrId);
        List<SkuEsModel.Attrs> attrsList = baseAttrs.stream().filter(attr -> {
            return idSet.contains(attr.getAttrId());
        }).map(attr -> {
            SkuEsModel.Attrs attrs1 = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(attr, attrs1);
            return attrs1;
        }).collect(Collectors.toList());
        // TODO 1、发送远程调用，库存系统查询是否有库存
        Map<Long, Boolean> stockMap = null;
        try {
            R skusHasStock = wareFeignService.getSkusHasStock(skuIdList);
            TypeReference<List<SkuHasStockVo>> reference = new TypeReference<List<SkuHasStockVo>>(){};
            stockMap = skusHasStock.getData(reference).stream().
                    collect(Collectors.toMap(SkuHasStockVo::getSkuId, SkuHasStockVo::getHasStock));

//            stockMap = skusHasStock.getData().stream().map(item -> {
//                SkuHasStockVo vo = new SkuHasStockVo;
//                item.getSkuId()
//            });
        }catch (Exception e){
            log.error("库存服务查询异常，原因：{}", e);
        }

        // 1.2 封装每个sku的信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skuInfoEntities.stream().map(sku -> {
            // 1、组装需要的数据
            SkuEsModel esModel = new SkuEsModel();
            BeanUtils.copyProperties(sku, esModel);
            // skuPrice,skuImg,hasStock,hotScore,brandName,brandImg,catalogName,attrs
            esModel.setSkuPrice(sku.getPrice());
            esModel.setSkuImg(sku.getSkuDefaultImg());
            // 设置库存信息
            if (finalStockMap == null){
                esModel.setHasStock(true);
            }else {
                esModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }
            // TODO 2、热度评分。默认0
            esModel.setHotScore(0L);
            // TODO 3、查询品牌和分类的名字信息
            BrandEntity brand = brandService.getById(esModel.getBrandId());
            esModel.setBrandName(brand.getName());
            esModel.setBrandImg(brand.getLogo());

            CategoryEntity categoryEntity = categoryService.getById(esModel.getCatalogId());
            esModel.setCatalogName(categoryEntity.getName());
            // 设置检索属性
            esModel.setAttrs(attrsList);

            return esModel;
        }).collect(Collectors.toList());

        // TODO 5、将数据发送给es进行保存 gzmall-search
        R r = searchFeignService.productStatusUp(upProducts);
        if (r.getCode() == 0){
            // 远程调用成功
            // TODO 修改spu状态
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        }else {
            // 远程调用失败
            // TODO 7、重复调用？接口幂等性，重试机制
            /*
                Feign的调用流程：
                    1、构造请求数据，将对象转为json
                        RequestTemplate template = buildTemplateFromArgs.create(argv); 构造请求
                    2、发送请求数据进行执行（执行成功会解码响应数据）
                        return executeAndDecode(template);
                    3、执行请求会有重试机制
                            while (true) {
                              try {
                                return executeAndDecode(template);
                              } catch (RetryableException e) {
                                try {
                                  retryer.continueOrPropagate(e);
                                } catch (RetryableException th) {
                                  Throwable cause = th.getCause();
                                  if (propagationPolicy == UNWRAP && cause != null) {
                                    throw cause;
                                  } else {
                                    throw th;
                                  }
                                }
                                if (logLevel != Logger.Level.NONE) {
                                  logger.logRetry(metadata.configKey(), logLevel);
                                }
                                continue;
                              }
                            }
             */
        }

    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {
        SkuInfoEntity byId = skuInfoService.getById(skuId);
        Long spuId = byId.getSpuId();
        SpuInfoEntity spuInfoEntity = getById(spuId);
        return spuInfoEntity;
    }


}
